Double-acting deep-well pump.



PATENTED JUNE 28, 1904, W. E. EEE. DOUBLE ACTING DEEP WELL PUMP APPLICATION FILED JUNE 8,1903.

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UNiTED STATES Patented June 28,1904.

PATENT Crt-ica.

WILLIAM B. ERB, OF CHICAGO, ILLINOIS.

DOUBLE-ACTING DEEP-WELL PUMP.

`SPECIFICA'IION forming part of Letters Patent'No. 763,664, dated June 28, 1904. i Application filed June 8, 1903. Serial No. 160,454. (NQ model.)

To all whom, zit may concern:

Be it known that I, WILLIAM B. Enma citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois,

5 have invented new and useful Improvements in Double-Acti ng Deep-Vlfeil Pumps, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

I The purpose of this invention is to provide au improved double-acting pump forV ldeep wells, its specific features being designed to afford maximum capacity within a given bore.

Itconsists of the construction `and specific I features which are set out in the claims.

In the drawings, Figure 1 is an axial section of the portion of pump-barrel containing i thc features constituting my invention. Fig.

2 is a transverse section at the line 2 2 on 2O `Fig. 1. Fig. 3 ris a section at the line 3 3 on Fig. 1.

The barrel 1 of my improvedvpump is de? signed to be in exterior diameter of the full in.- kterior diameter of the well-casing, and allthe z 5 couplings and connections are therefore kept within that diameter. The structure is such that I can employ for this barrel standard brass tubing, into the upper and lower ends of which thereare screwed theterminal fittinge 2 and4 3, respectively. The lower ftting 3 comprises a valve-seat 4. and a .cage 5 above, it defining what may be termed the valve-chamber-z. e., the space within which the valve' 7 may move while being re- 3 5 tained in proximity toits seatfl. The upper fitting 2 has screwed into its lower end a valveseat 6, and the cavity of the fitting above said seat constitutes a chamber for a valve 8, lodged therein.` The valve 7 is designed to be intro- Vl0 duced laterally under the cage 5 before the fitting is 'screwed into the barrel v1, and the valve 8 is to be introduced into its. chamber l through the lower end of the tting'2 before the seat 6 is screwed in. Said fitting 2 may have a bridge 9 above the valve and check the movement of the latter away from the seat. In the barrel between the two valve-chambers thus located near the opposite ends there isl placed the piston 10, havingsuitable packingrinz'slO The piston has toward its upper and lower ends, respectively, valve-chambers comprising the valve-seats 11 and 12 and above the seats, respectively, in the chambers are the valves 13 and 14,' seating downward on their respective seats. Extending through thepiston from the vlower valvechamber to the upper valve-seat are two noncommunicating passages 15 and 16, respectively, the particular forni of which will be hereinafter described. A tube 17 extends 60 `down through the valves 8 and12 and their chambers and seats, respectively, and is connected tothe piston at the upper end of the duct or passage 16, and thereby becomes a stem for the piston, by which it may be operated up and 6 5l down in the barrel 1. A tube 18 is similarly extended up through the valves 7 and 14 and their seats, respectively, and connected into the lower end of the passage or d-uct 15, and is there l by carried with the piston in its vertical reciprocation in the barrel. The lower end of the tube 18 is open in the Water-supply and may be f guarded by the 'perforated tube 20, screwed into the lower end of the fitting 3 and operv ating as a strainer to exclude sand both from .thebarrel and from the tube 18.` .The upper end of the tube `17 above the valve is per-y forated, as seen at 21, to aord communication from its interior out into -'theruptakepipe 22, which is screwed into. the upper end 3 0 vof the fitting 2 and constitutes the upward ycontinuation of the barrel for conducting the 1 water upward to the discharge-spout. To the upper end of the 1tube 21 there'is connected bythe coupling 23 the pump-106124, which is 85- preferably hollow, and thereby constitutes a continuation .ofthe tube 17. The operation oi' this lstructure is as follows: When the pump-rod is depressed, carrying the piston downward in the barrel 1, the valve 8 is seate ,and a-tendency to vacuum is caused in the barrel above thepiston, causing the water to'pass up 'through the tube 18 and passage 16, lifting the valve 13 and occu# pying the 'space in the barrel abovethe pis- 95 ton. A't the same time thc'valve 7 is seated and the water (whiclnas willbe seen in its operation, occupiesthe barrel below the piston) is forced up .past the valvela through -the piston V16 and into the IAtube V17." When 10Q the barrel below the piston, the valve 14 be-l the stroke is reversed, the piston is lifted and valve 13 is seated, and the water in the barrel above the piston is lifted out through the valve-seat 6 past the valve 8, which is lifted from its seat by su'ch movement of the water, and passes out from the upper end of the fitting 2 into the uptake-pipe 2Q. Simultaneously a tendency to vacuum is caused "in the supply being obtained equally from the up and down strokes of the piston.

The specilic construction of the piston, by.

whiclythe twol end connecting-passages 15 and 16 are formed through it, is preferably such as cause each passage to terminate centrally.

with respect to the barrel at the end at which it is to have the tubeconnection described. This is most conveniently-effected by casting the middle-element of the pistonl as two concentric cylinders A and B, joined by vertical webs (i and at diametrically opposite positions, and by transverse semi-annularwebs ai said semi-annular diaphragm.

and L at the upp'er and `lower--ends, respectively, one at one side and the other at the other side of said longitudinalwebs it and 7i, the interior cylinder A having a transverse diaphragm A midway in its length and being cut away between that diaphragm and the semi-annular web 7;' at the lower end for lcorninunication with the semi-annular space outside of said interior cylinder and'beingl c ut between said diaphragm and the upper semi.

annular web (Lf for like communication with the other semi-annular space corresponding to These -semianniilar spaces, together with the portionsof the interior cylindrical cavity above and below the transverse,diaphragm, `constitute, as

will be seen, the passages 1GY and 15, respec,

tively.

As a convenient means of construction I pre# fer to make the end portions ofthe piston comprising the seats and chambers of the valves 13 and 14, as illustrated, in A separate pieces from said middley portion of the piston and screwed thereonto. Said middle portion has, preferably, an annular iiange c at theiniddle point of its length, whose exterior diameter is fitted to the interior diameter of the barrel 1, and onto the said middle portion at oppo-Av site sides ofthis annirlar liaiige there are passed metal rings (I il before the endpor tions comprising the valve seats and chambers are screwed on, and between said metal rings and the annular flange on one end and the terminal elements comprising the valve seats and chambers on the other end there are introL duced suitable rings 10, of packing material, which, it will be noted, are adapted to be eX- panded for tight fitting in the barrel by the screwing up of the terminal elements on the middle element of the piston.

1. A double-acting pump comprising a barrel having toward each end a valve-seat,valve chambers above said seatsV respectively, and

downwardly-seating valves therein; a piston playing in such barrel between such valve seats and chambers, said piston having two non-communicating ducts extending longitudinally therein,l one duct opening at one end centrally with respect to the piston, and the other duct opening centrally with respect thereto at the other end; tubes connected to the piston at said central openings of the ducts and extending therefrom respectively upward and downward; valve-chambers -at the opposite ends of the piston-surrounding the tubes respectively, said ducts opening into4 said chambers respectively; downwardly-seating valves in said chambers, and connections from the upper end of the upper tube for reciproeating the piston. A i

, 2. A double-acting pump comprising a barrel having at its upper and lower ends respectively valve seats and upwardly opening valves thereabove, a piston between said valveseats having at its upper and lower ends valveseats and upwardly-opening valves thereabove respectively, said piston having extending between said valve-seats two 'non-communicating ducts, one opening centrally with respect to the barrel at the upper end, and the other opening centrally with respect to the barrel at the lower end; tubes extending through the valve-seats in said piston 'and connected into said central upper and lower ends of said duets respectively, the upper tube beingopen above the valve at the upper endof. the barrel,

and the lower tube being open below the valve at the lower end, and connections for reciprocating the piston in the barrel.

3. In a double-acting pump the combination with a barrel having at its u pper and lower ends valve-seats and valves thereabove seating downwardly; tubes extending centrally within 1 the barrel and affording guidance for said valves'in their movements with respect to their seats; a piston between the valve-'seats having itself toward its upper and lower ends valve-seats and valves seating downward thereon, said tubes being extended through said valve-seats and valves, and connected to y the piston, and affording guidance forthe valves thereon; said piston 'having two non'- cominunicating ducts connected with said tubes respectively at opposite ends, and at their other ends communicating respectively with the openings through the valve-seats.

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4:. In aidouble-acting pump a piston having concentric cylindrical elements, A and B, longitudinal webs, a and 6,-joining said concentric cylinders and partitioning the annular spacebetween them; the central cylinder having a transverse diaphragm, A', the semi-annular partitioned intervals between said con- 'centric cylinders being closed, one at the top and the other at the bottom, by the webs, ai',

b', the inner cylinder being cut away laterally "above the transverse diaphragm for communication downward withthe semi-annular space at that side, and being cut away below said transverse diaphragm laterally for commu nication upward with the other semi-annular space. y

5. Inadouble-acting pump, in combination with the barrel having at its upper and lower A ends valve-seats and valve thereabove seating downwardly, the piston between Said valveseats` having two non-communicating ducts extending -through it, one opening centrally at the upper end and the other opening centrally at the lower end; tubes connected to said centrally-opening ends of 4the ducts respectively,and extending respectively upward and downward through the upper and lower valve-seats of the barrel for guiding the pislton and conducting the water through the valve-seats; valves which control said piston ducts respectively, both opening upward, the valves at the upper and lower end of the barrel being annular in form and centered and guided on the tubes respectively; terminal junction-fittings for the upper and lower ends of the barrel secured thereto by insertion therein, and having said seats for said valves respectively and provided with means forcliccking,the movement of the valves away from their seats.

6. In a double-acting pump comprising a barrel having toward each end an ,annular valve-seat and a valve-chamber thereabove; a piston playing in such barrel between the valve seats and chambers and having tubular stems extending from the oppoiste ends through the, centers of said valve -seats respectively; annular valves lodged in said chambers above said valve-seats respectively, and carried and guided on said tubular stems of the piston, the piston having a cavity at each end through which the vtubular stems extend, rendering said cavities annular, and having non-communicating ducts, each of'which at one end communicates with thc said annular cavity at that end of the piston, and at the other end leads into `the open end of thetubular stem connectedA to the piston thereat; valve seats vwhich form vrespectively .the

lower and upper boundaries of said lower and cavityannular, and having non-communicating ducts,each of which at one end communicates with the said annular cavity at that end of the piston, and at the other end leads into the open end of the tubular stem connected to the piston thereat; valve-seats which form respectively the lower and upper boundaries of said lower and -upper cavities respectively, and annular valves mounted and guided on said stemsabove said valve-seats respectively.

8. Inadouble-actingpumpcomprisingabarrel having toward each end a valve-seat and a valve-chamber thereabove, a piston playing in such'barrel between the valve seats and chambers and having tubular stems extending from the opposite' ends through the centers of said valve-seats respectively, such piston comprisi ing an integral metal body to which the tubular stems are directly connected, and having cavities ,at each end through which the tubular stems extend to make junction with said body, and .having non-communicating ducts,

each of which at one end communicates with the cavity at that end of the piston, 'the tubular stern from the other end being connected to` said body bybeing screwed into the otherend of such cavity; valve-seats forming respectively the lower and upper boundaries of said lower and upper cavities respectively, and valves mounted and guided on the tubular stems above said valve-seats respectively.

In testimony whcreotl I have hereunto set my hand, in the presence of two witnesses, at Chicago, Illinois, this 3d day of June, A. D. 1903.

W M B. ERB.

In presence of* GHAS. S. BURTON, FRED G. Frscnnn.

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